html {
	/*font-size: 62.5%;*/
	padding: 0;
	margin: 0;
	font-family: "微软雅黑" arial;
}

* {
	padding: 0;
	margin: 0;
}

div {
	/*border: 1px solid red;*/
}

body {
	padding: 0;
	margin: 0;
}

body {
	padding-top: constant(safe-area-inset-top);
	/*为导航栏+状态栏的高度 88px */
	padding-left: constant(safe-area-inset-left);
	/*//如果未竖屏时为0    */
	padding-right: constant(safe-area-inset-right);
	/*//如果未竖屏时为0*/
	padding-bottom: constant(safe-area-inset-bottom);
	/* //为底下圆弧的高度 34px*/
	/*background-color: red;*/
}

.first {
	max-width: 1080px;
	margin: 0 auto;
	box-sizing: border-box;
	/*background-color: rgb(240, 239, 245);*/
	/*opacity: 0.5;*/
}

img {
	width: 100%;
}

.cu {
	font-weight: 600;
}

.duiqi {
	margin: 0 auto;
	width: 95%;
}
/*===*/
.back {
    width: 13.0vw;
    height: 8.0vw;
    position: fixed;
    bottom: 32.0vw;
    z-index: 66;
    right: 4vw;
    opacity: 0.8;
}

.content_one{
	padding-top: 12vw;
}
.top_top {
	display: flex;
	width: 93%;
	height: 6vw;
	background-color: #75af50;
	margin: 0 auto;
}
